Answer:
You can download the answer here. Link below!
pls help me 3 i beg of you (IM2)
The polynomial representing the area of the is 49n² - 25
How to determine the polynomialThe formula for area of a square is expressed as;
Area = a²
Where a is the side length
From the image shown, we can see that the side length takes the value (7n - 5)
Substitute the value into the formula
Area = a²
Area = (7n - 5)²
Area = (7n - 5) ( 7n + 5); this is so because of the difference of two squares
Expand the bracket
Area = 49n² + 35n - 35n - 25
collect like terms
Area = 49n² - 25
Thus, the polynomial representing the area of the cube is 49n² - 25
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If I1 ⊇ I2 ⊇ .... In ⊇... is a nested sequence of intervals and if In = [an; bn], show that a1 ≤ a2 ≤ ....... ≤ an ≤ ........ and b1 ≤ b2 ≤..... bn ≤ ......
The intervals are nested, each subsequent interval is contained within the previous one. Mathematically, this means I₁ ⊇ I₂ ⊇ ... In ⊇ ... . Therefore, we have:
1. I₁ ⊇ I₂ implies [a₁; b₁] ⊇ [a₂; b₂], which means a₁ ≤ a₂ and b₁ ≥ b₂.
2. I₂ ⊇ I₃ implies [a₂; b₂] ⊇ [a₃; b₃], which means a₂ ≤ a₃ and b₂ ≥ b₃.
To show that a1 ≤ a2 ≤ ... ≤ an ≤ ..., we need to use the fact that the sequence of intervals is nested, meaning that each interval is contained within the next one.
First, we know that I1 contains I2, so every point in I2 is also in I1. That means that a1 ≤ a2 and b1 ≥ b2.
Now consider I2 and I3. Again, every point in I3 is also in I2, so a2 ≤ a3 and b2 ≥ b3.
We can continue this process for all the intervals in the sequence, until we reach In. So we have:
a1 ≤ a2 ≤ ... ≤ an-1 ≤ an
and
b1 ≥ b2 ≥ ... ≥ bn-1 ≥ bn
This shows that the endpoints of the intervals are ordered in the same way.
Given that I₁ ⊇ I₂ ⊇ ... In ⊇ ... is a nested sequence of intervals and In = [an; bn], we can show that a₁ ≤ a₂ ≤ ... ≤ an ≤ ... and b₁ ≥ b₂ ≥ ... ≥ bn ≥ ... as follows:
Since the intervals are nested, each subsequent interval is contained within the previous one. Mathematically, this means I₁ ⊇ I₂ ⊇ ... In ⊇ ... . Therefore, we have:
1. I₁ ⊇ I₂ implies [a₁; b₁] ⊇ [a₂; b₂], which means a₁ ≤ a₂ and b₁ ≥ b₂.
2. I₂ ⊇ I₃ implies [a₂; b₂] ⊇ [a₃; b₃], which means a₂ ≤ a₃ and b₂ ≥ b₃.
Continuing this pattern for all intervals in the sequence, we can conclude that a₁ ≤ a₂ ≤ ... ≤ an ≤ ... and b₁ ≥ b₂ ≥ ... ≥ bn ≥ ... .
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Will someone please help me
Answer: The answer is n>-5
Step-by-step explanation:
For the second step, it’s a minus 1
A certain medication has an initial dosage of 78 mg. After 3 hours, 48 mg of the medication still remains in the patient's bloodstream. Find the decay constant, r, for this continuous function, and use it to find the number of hours for the half-life, h, of the medication.
A continuous function is a mathematical function that has no abrupt changes or interruptions in its graph, meaning it can be drawn without lifting the pen from the paper. To find the decay constant, r, for this continuous function, we can use the formula:
A(t) = A₀ * e^(-rt)
Where:
A(t) is the amount of medication remaining after time t
A₀ is the initial dosage
e is the base of the natural logarithm (approximately 2.71828)
r is the decay constant
Given that the initial dosage is 78 mg and after 3 hours, 48 mg still remains, we can substitute these values into the formula:
48 = 78 * e^(-3r)
Next, we can solve for the decay constant, r. Divide both sides of the equation by 78:
48/78 = e^(-3r)
0.6154 = e^(-3r)
Now, take the natural logarithm of both sides to isolate the exponent:
ln(0.6154) = -3r
Finally, solve for r by dividing both sides by -3:
r = ln(0.6154) / -3
Using a calculator, we find that r ≈ -0.1925.
To find the half-life, h, of the medication, we use the formula:
h = ln(2) / r
Substituting the value of r we just found:
h = ln(2) / -0.1925
Using a calculator, we find that h ≈ 3.6048 hours.
Therefore, the decay constant, r, is approximately -0.1925, and the half-life, h, of the medication is approximately 3.6048 hours.
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In rugged terrain, Martin can hike 1/8 Mile in 1/2 hour. At this rate, how far can Martin hike in 1 hour?
A. 5/8 mile
B. 1/16 mile
C. 1/4 mile
D. 1/6 mile
To find a two-digit number such that if the places of its digits are interchanged, a number will be obtained that is four and a half times greater than the given
I really need hel, please help
Answer:
1. 3(x-4)-9= 3
3x-12-9=3
3x-21=3
3x=24
x=8
2. x=6
3. x=8
4. x=2
Answer:
Miscellaneous
Step-by-step explanation:
1. Distribute and simplify to get: 3x-12-9 = -3
Then combine like terms to get 3x-21 = -3
Add 21 on both side sto get 3x = 18
divide 3 on both sides to get x=6
2. x+5 = 11
Subtract 5 from both sides to get x = 6
3. 2x-3 = 13
Add 3 to both sides to get 2x = 16
Divide 2 from both sides to get x =8
4. 4(x+2) = 16
Distribute to get 4x+8 = 16
Subtract 8 from both sides to get 4x = 8
Divide 4 from both sides to get x=2
Caroline’s cell phone plan costs $32 per month. Create a table that shows the sum of the amounts that Caroline will pay for her cell phone plan over the next 4 months. Can y'all please help me
Answer:
Month:
1 = 32$
2 = 64$
3 = 96$
4 = 128$
Step-by-step explanation:
convert the equation into the slope-intercept.
Answer:
Not sure what you're equation is but this is how you would convert to slope intercept form:
Step-by-step explanation:
y=mx+b is slope intercept form where m is the slope and b is the y intercept. the x is just x so don't change that. graphing your equation might help you to convert. Hope this helps if I had the equation it would help more. :)
How do you find the scale factor of a point dilation?
Answer:
Finding the dilation's center point is the first step in determining the scale factor. Next, we measure the distances between the center point and various points on the preimage and the image. We may determine the scale factor by dividing these distances by 2.
Step-by-step explanation:
Pleaseee help will give BRAINLIEST
Answer: 170 to 160
Step-by-step explanation:
According to the data in the figure, find the value of x and y.
Answer:
This is a educated guess, but x is 80 and y is 100.
Step-by-step explanation:
My logic here is that the triangles are the same because of all the congruent lines and stuff. But from there, you know that both the right and the left side are 40 degrees. You know the total degree of a triangle is 180 so 180 - 40 - 40 is 100. So the final angle is 100. If you look at x, its on the outside, but on a line. If you can imagine a circle, its half, so its a 180 degrees total. Then its 180 = x + 100. So x is 80. And then by that same logic its y = 100.
AYO CAN YALL HELP Me PLZZZZz IF U HELP WIT ALLL U GET BRAINLES
Answer:
The first one is B
Step-by-step explanation:
if you count how many faces or sides it has its 5
Answer:
1. B
2. D
3. D
4. A
5. C
REMEMBER TO DOUBLE-CHECK JUST IN CASE.
HELP PLEASEEE
PLEASEEEEEEEEEEEEEEEEEEEEEEe
In a jazz band, Ben plays the saxophone, Jack plays the
trumpet and Lily sings. They are all the same age. There
are 3 more members of the jazz band,who are 17, 18 and
19 years old, respectively. The average age of the jazz
band is 19. How old is Lily?
Answer:
Lily is 20 years old.
Step-by-step explanation:
6 × 19 = 114
( 114 - 17 - 18 - 19 ) ÷ 3
= 60 ÷ 3
= 20
If 12% of the students in my class scored an F on their last test and I have 60 students how many students did not pass
Answer:
7 students got an F
Step-by-step explanation:
Take 12% and multiply by 60 students
12% * 60
Change to decimal form
.12 * 60
7.2 students
Round to the nearest student
7 students got an F
consider a two-sided confidence interval of the population mean with known variance (equation 6.19 in ang and tang). a. by how much must the sample size n be increased if the width of the confidence interval is to be halved? b. suppose the sample size n is increased by a factor of 25. how does that change the width of the interval?
The increasing the sample size by a factor of 25 will reduce the width of the confidence interval by a factor of 5.
a. Suppose we have a two-sided confidence interval for the population mean with known variance, given by the equation:
Cl is the confidence interval, x is the sample mean, σ is the population standard deviation, n is the sample size, and zα/2 is the z-score corresponding to the desired level of confidence.
The σ are fixed for a given level of confidence, we can achieve this by increasing n by a factor of 4.
Specifically, if we increase the sample size from n to 4n, then the new confidence interval will have half the width of the original interval.
b. If the sample size is increased by a factor of 25, then the term √n in the denominator of the above equation will be replaced.
Therefore, increasing the sample size by a factor of 25 will reduce the width of the confidence interval by a factor of 5.
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Choose the 5 numbers that give a remainder of 5 when divided by 7 ASAp
Answer:
was there a list to choose from
Step-by-step explanation:
19, 26, 33, 40, 47
Which of them is true?
A. [ -18]< 6
B.[ -6] < [ -8]
C.[8]<[-6]
D.[-6] < -8
Answer:
B. |-6| < |-8|
Step-by-step explanation:
The absolute value will always make the number positive. B is the only option in which (once absolute value is used) will make a true statement.
|-6| < |-8| = 6 < 8
( 6 is less than 8 )
Which table of values represents exponential decay?
The table of values that represents exponential decay is (c)
How to determine the table of values represents exponential decay?From the question, we have the following parameters that can be used in our computation:
The table of values
An exponential function is represented as
y = abˣ
Where
Rate = b
When the rate is less than 1, then the table represents a decay
i.e when y reduces as x increases
The table that has the above features is the table (c)
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20 divided by 4 1/2 help, i wil give brainlist if have the step by step
Answer:
40/9 or 4 4/9
Step-by-step explanation:
Evaluate: m2 • m3 PLEASE ANSWER I WILL GIVE BRAINLIEST
5m
6m
m5
m6
Answer:
Step-by-step explanation:
If u means m^2 * m^3 = m^5
If a pharmacist combined 50-ml portions of thre syrups having specific graveties of 1.10, 1.25, and 1.32, what would be the specific gravity of the combined product?
The specific gravity of the combined product is 1.22
Specific gravity is the ratio of the density of a substance to the density of some substance (such as pure water) taken as a standard when both densities are obtained by weighing in air.
Given,
The total quantity of portion= 50 ml
Specific gravities of the three syrups = 1.10,1.25 and 1.32
Then,
The specific gravity of the combined product= \(\frac{1.10+1.25+1.32}{3}\)
= 1.22
Hence, the specific gravity of the combined product is 1.22.
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Pls help me thank you <3
Solving by GCF
1)7x^2+2x=0
Solution(s) are is:
2)5b^2-10b=0
Solution(s) are is:
3)3d^2-d=0
Solution(s) are is:
4)17x^2+51x=0
Solution(s) are is:
Answer:
1. 9x³
2.5b³
3.2d
4. 68x³
9514 1404 393
Answer:
0, -2/70, 20, 1/30, -3Step-by-step explanation:
Factoring out the greatest common factor in each case, we can simplify the process of finding the non-zero solution. The solutions are the values of the variable that make the factors be zero.
1) 7x^2 +2x = 0 = (x)(7x +2) ⇒ x = 0; x = -2/7
__
2) 5b^2 -10b = 0 = (5b)(b -2) ⇒ b = 0; b = 2
__
3) 3d^2 -d = 0 = d(3d -1) ⇒ d = 0; d = 1/3
__
4) 17x^2 +51x = 0 = 17x(x +3) ⇒ x = 0; x = -3
The angle \theta_1θ
1
theta, start subscript, 1, end subscript is located in Quadrant \text{IV}IVstart text, I, V, end text, and \cos(\theta_1)=\dfrac{9}{19}cos(θ
1
)=
19
9
cosine, left parenthesis, theta, start subscript, 1, end subscript, right parenthesis, equals, start fraction, 9, divided by, 19, end fraction .
What is the value of \sin(\theta_1)sin(θ
1
)sine, left parenthesis, theta, start subscript, 1, end subscript, right parenthesis?
Express your answer exactly.
\sin(\theta_1)=sin(θ
1
)=sine, left parenthesis, theta, start subscript, 1, end subscript, right parenthesis, equals
I guess that we know that the angle θ is in the fourth quadrant, and we know that:
cos(θ) = 9/19
now we want to find the value of sin(θ).
To do it, we can remember that for a point (x, y), such that we can define an angle β between the positive x-axis and a ray that connects the origin with the point (x, y), we can write the relations:
tan(β) = x/y
sin(β) = y/√(x^2 + y^2)
cos(β) = x/√(x^2 + y^2)
Because the angle is in the fourth quadrant, we know that:
x > 0
y < 0.
And we also know that:
cos(θ) = 9/19
then we have:
x = 9
√(x^2 + y^2) = √(9^2 + y^2) = √(81 + y^2) = 19
Solving the above equation we can find the value of y, that we need to remember, is negative:
√(81 + y^2) = 19
81 + y^2 = 19^2
y^2 = 19^2 - 81 = 280
y = √280 = -16.7
Now that we know the value of y, we can replace that in the sine equation to get:
sin(θ) = -16.7/19 = -0.879
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a plane drives at a constant. speed it take 4 hours to travel 2,240 miles. what is the planes speed in miles per hour?
Answer: 560 mph
Step-by-step explanation:
Distance = rate*time
2,240 = rate*(4)
rate = 560mph
please help with all will mark brainliest, rate 5 stars and thank you!!
Answer:
10) 5
11) Scalene
Step-by-step explanation:
10) A regular hexagon has equal sides, so one side is just 30/6, which is 5 feet.
11) A scalene triangle has no two sides that are the same length, where an isosceles triangle has two sides the same, and an equilateral triangle has all sides the same length.
8. Mohan wants to buy a trapezium shaped field.
Its side along the river is parallel to and twice
the side along the road. If the area of this field is
10500 m² and the perpendicular distance
between the two parallel sides is 100 m, find the
length of the side along the river.
Top surface of a raised platform is in the shape
ofthe octagonalourfa
Answer:
The length of the side along the river is 140 m
Step-by-step explanation:
Equations
To solve the problem, we need to recall the area of a trapezium is:
\(\displaystyle A=\frac{b1+b2}{2}.h\)
Where b1 and b2 are the lengths of the parallel sides and h is the height of the trapezium.
The field to be bought by Mohan has a trapezium shape with a side along the road of side x and a side along the river of side 2x, as stated in the problem.
Knowing the height is h=100 m, and the area is 10500 m2:
\(\displaystyle \frac{x+2x}{2}\cdot 100=10500\)
Simplifying:
\(\displaystyle (3x)\cdot 50=10500\)
\(150x=10500\)
Dividing by 150:
\(x = 10500 / 150 = 70\)
x = 70 m
2x = 140 m
The length of the side along the river is 140 m
Would you rather lose the ability to cry or cry every day for 20 minutes randomly?
Answer:
Lose the ability to cry because i dont cry that much
Step-by-step explanation:
Answer:
loose the ability to cry l m a o
Step-by-step explanation:
Kirk is helping his grandparents set up their new portable music players. His grandmother, Maude, has 1 jazz album, 2 country-western albums, and 5 heavy metal albums. Kirk's grandfather, Claude, has 3 classical music albums, 2 rap albums, and 7 heavy metal albums.
If Kirk's grandparents' portable music players are on random shuffle mode, who has the greater chance of listening to a heavy metal album? Explain how you know.
Answer:
Maude
Step-by-step explanation:
Maude's collection has 5 heavy metal out of a total of 8 albums
Claude's collection has 7 heavy metal out of a total of 12 albums
if you divide 5 by 8 you get .625, which is the same as 62.5%
if you divide 7 by 12 you get .583, which is the same as 58.3%
62.5% is greater than 58.3%
Answer: Grandma
Step-by-step explanation:
His grandmother because the chance a heavy metal album comes on is 5 times out of 8 while his grandfather is 7 times out of 12. For a better representation grandma is 15/24 while grandpa is 14/24.